Add me to the chorus of people who thinks this is bullshiat. I use two e-mail addresses. My work account (University) which is pretty good about catching the worst spam and that I don't use for private business, and my gmail account. Which I use for a mix of professional/private use. Gmail is also damn good at catching most spam so most of what I get are things I signed up for. If it isn't important or I don't need/want to read it I delete it. Everything else I either answer quickly, or set aside for follow-up later. Usually this is work related tasks that I can't get to right away.

I want to know when I have new e-mail, and how much new unread stuff I have sitting there for me to look at. None of this 5,672 unread e-mails bullshiat.

You want to achieve it easily? Kill your current account, get a new one. Only give it to what you need. Get another account, give it for use purchasing online, and opt-out of EVERYTHING. Never sign up for stupid mailing lists, give it out to marketers, and at first sign of spam, mark every item that is spam as such.

Congrats, permanent Inbox Zero.

\The only time this won't work is if you've pooched your professional e-mail address... if you did that, you know you are an idiot who used their mail wrong. There is an incredibly small chance here you are important enough/high up enough up in a large corp you are on craptons of BS. At which point, filtering should still be enough.